Draft-arm for railway-cars.



C. C. KINSMAN. DBAFT ARM FOR RAILWAYCARS. APP'ucATmN FILED SEPT. 1 8, 1914.- 1,300,847

y f/k Patnt-ed Apr. 15, 1919.

UN QN WN WN im UNITED STATES PATENT oEEICE.

CHARLES e. KINSMAN, or CHICAGO, ILLINOIS, AssIGNoR To UNIVERSAL DRAFT GEAR ATTACHMENT Co., or CHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

, DRAFT-ARM `ECR RAILWAY-CARS.

specificati@ ef Letters Patent. Patented `Apr. 15, 1919.

`Application filed September 18,1914. Serial No. 862,295.

To all whom z'zf may concern Be it known that I, CHARLES C. KINSMAN, a citizen of the United States, and resident of Chicago, county of Cook, and State of Illinois, have invented certain new and uscful Improvements inDraft-Arms for Railway-Cars, of which the following is a specification, and which are illustrated in the accompanying drawings, forming` a part thereof.

vThe invention relates to draft arms for railway cars adapted to transmit to the car the stresses of draft and buffng, and to strengthen its underframe.

One form of construction by which these objects are attained is hereinafter described and is illustrated in the accompanying drawings, in which- Figure 1 is a detail longitudinal vertical section of al car showing the improved draftV arm in elevation;

F ig. 2 is a cross section on the line 2-2 of Fig. 1; and p Fig. 3 is a sectional view on the line 3-3 of Fig. l.

The improved draft arm comprises a body portion 10 provided with the usual draft lugs, as 11, 12, arranged and constructed as may be required to coperate with the draft gear intended to be used.

The arm is provided with a rearward projection extending beyond the body bolster of the car, the top and bottom members of which are represented, respectively, at 13, 14. This rearward extension of the draft arm may be described as comprising two sections, a lower section 15 which extends through the bolster, and an upper section 16 which arches over. it. Differently described, the extension may be said to be provided with an aperture 17 through which the bolster, or a portionthereof, viz :-the upper plate 13, extends.

The draft arm is adapted for use in connection with what is known as a plate bolster, the upper and lower members 13, 14, of which are fiat wrought metal plates, the upper one being straight from end to end and the lower one being bowed upwardly at its ends, the two formin a truss. In such bolsters the upper mem er is usually provided, as shown, with depending lugs, as 18, at its ends, against which lugs the ends of the lower member 14 abut. The aperture 17 in the draft arm is of the same width as the bolster member 13, and is of sufficient height to permit the insertion therethrough of the lug 18. The lower face of the portion 15 of the draft arm extension is recessed, as shown at 19, to receive the truss member or plate 14.

The upper section 16 of the draft arm eX- tension is adapted to lie against a side face of one of the car sills 20, shown in the drawings as being of wood and the lower section 15 is preferably provided withV lateral flanges, as 21, 22, 23, as many as may be deemed advisable for securing the requisite strength, the top and bottom flanges 21, 23, forming bearing surfaces for the bolster members 13, 14, the upper one of these mem bers being securely'held between the flange 21 and the lower face of the sill 20. Such bolts may be utilized for securing the draft arm to the sill and to the bolster as the j udgment of the designing engineer may dictate. It is advisable, however, to pass one or more bolts, as 24, 25, vertically through the sills, the bolster members 13 and 14, and the flanges 21 and 23 of the draft arm, thereby securely binding these several parts together.

Excessive builing stresses tend to break the sills of the car upwardly in the line of the bolster. The rearward extension of the draft arm reinforces the sill at this point, and the portion 15 of its extension greatly strengthens this reinforcement, especially as the upper and lower sections are formed integral.

. Adjacent the inner end of the draft arm the lower member 15 and its extension is laterally offset, as shown at 26, to extend under the sill 20, and is provided with a depending flange 27 for abutting against a sub-sill 28. This offset portion of the part 15 thus provides a pocket for receiving a tie plate 29 which secures the two draft arms together and extends under both of the sills. Bolts 30 may be set through the sills, the offset portion of the section 15 of the draft arm and the plate 29, thereby still further relieving the sills from the breaking stresses in the line of the bolster by distributing them longitudinally along the sill.

In assembling the parts the upper bolster plate 13 is passed through the apertures in the two draft arms before they are tted to the car frame. After these parts have been secured in place the lower bolster member 14 is applied.

I claim as my nventon-- laterally offset at 'its inner end to extend un- A (lr-tft 21.1'11'1 for railway oars comprising der the oar sill and form a pocket for :t tie a, `body portion having draft shoulders, and Vplate'. j Y

an extension for projecting beyond a body CHARLES KNSMAN.

5 bolster, such extension having' a section arch- Witnesses.

ing over the bolster and a section rmssng;v LOUIS KQGILLSON, through the bolster, the lower section being' E. M. KLATGHER.

Copies of tllis patent may be obtained for ve cents each, by addressing the fCommissioner of Patents, WashingtomD. G. 

